Control sequences for Nitrogen-Vacancy centers in the high frequency regime

TL;DR

This paper discusses advanced control sequences for nitrogen-vacancy centers in diamond to improve their performance in high-frequency quantum sensing applications, addressing current experimental limitations.

Contribution

It introduces new protocols designed to enhance NV center control at high frequencies, expanding their application scope in quantum sensing.

Findings

Proposed protocols improve NV control at high frequencies

Enhanced sensitivity in high-frequency quantum sensing

Overcoming experimental limitations in NV manipulation

Abstract

In recent years, the field of quantum sensing has garnered increasing attention due to its potential to revolutionize various scientific and technological domains. Among the different quantum sensors, the nitrogen-vacancy (NV) color center in diamond stands out for its ease of use, ability to be read out and initialized with a laser, and long coherence times even at room temperature. Over the past years, numerous quantum control sequences have been developed to successfully deploy NV sensors in diverse situations, such as measuring nearby spin clusters, classical AC signals, and static magnetic fields. However, the NV center faces limitations when coupling to high frequency signals. More specifically, as the frequency of the target signal increases, stronger driving fields over NVs are needed, ultimately reaching the limits of current experimental capabilities. In this thesis, we propose several protocols to address this high-frequency problem in different scenarios.